Process of manufacturing products from cornstalks, sugar-cane, &amp;c.



No. 853,943. PATENTED MAY 14, 1907.

v. DRBWSEN. PROCESS OF MANUFACTURING PRODUCTS FROM GORNSTALKS,

' SUGAR CANE, &u.

APPLIOATKON TILE? JULY 9, 1903.

i is

Te all whom, con/eerie eherecter similar to woodend .eorjiteihs a high perceriteg'e of fibers, while the, pith is spongy,

UNTTED STATES jvreeo DREWsEN,

OF NEW.

PATENT mm bhobr's'sbk MAiiUFActuRiN PRODUCTS mot C(illNTALKS, SUGAR CANQE, tic.

Spee ificatiozi of Letters r aieiited 144901 e l k o n. a t ,ieGO D W E A citizen of the-,Kiiigdoirigof N orwey, residing in f fi ty f e kgi h o ty Kingsiand State of New Yorkgheve invented a new and useful Broeess ofMenlifa eturin'g Products, from Corn stalks, sugar-G ne, end Analogous Pithy Stalks, of which the following is a splecificatio'nh The di fic l y prepa ifgi fii i'oiis' inattei'i el (cellulose), or other products suitable igor the. manufacture of papei; these pithy stalks lies L i i the different; character of iifil e t Pa ts f the ste k 17. lk pr p er, namely Without legives or .husks, fQ T iiistanee, eonsists of two eres Whiehean; be used by pa' er nieiiiifeet urer s .tojvity the @m i eshei axleemet hehe is s and consists prihcipelly cells This i re l ru the is-ne'er e shel when treated. with-chemical substeri'ces,s1ich l is eeus tie-sodyorsiilflireusacid and lime,

, shellalid the: cells of the pith required two separetepooking,operetions and that the former required astro fer solution and it longer time in cookirig t en theletten. vIt Wessilso before, thought that if the pith were cooked simultaneously with. the shell in the shine streiigth of the liqliol and forthesarrie length of time as arere uired fonthe disin? tegretioi of the fibers o" the shell a'nd their separation from the incrustageous: 'matter that the eells of the pith are reeticelly de: stroyed and could not. be ,uti ized, I have dis ve d e er th thi Ii -t a ways thecese, and thet b ythe u'se ofproper means only (a single operation ofi eookirigis, \neoes'? SW fo e en i e talk-she l d pi i a d thet both can. be used either, separately or to ether in making "tl ie desired paper by usiiiithe following method. A

y nvention is designed v. set-e tates described andian sg par'etus ll) ggfgufldis a wh elif m n e eesewt il ustr ted in the accompanying awi'ng in Whiehsi iiil ar letters 0i referenee refer to simi- .lenparts throughout theseverel views. 3 a v The: followirig is e; description of my proc: ess; I fi- SF p t i t up he ntire stalk into -iiiec esi ;eX pQ ses the, pith lying within the shell. I then pl ge. thesepieees of st alk inai digester, or rotary, eohtainili'g' Eei pent of cagustic sedsi, eele ileted frorii the one ;dr zweight of the sit-elkis efficient, though do net confine myselfeither t0 this specificso'lution or this speeifiestren'gth of speeifie length (if cooking. time arid. steam res's ire giyen jbelo'vy coolriri ig the stalks or six hours at 3,; steam press ire of isrxty pe m t e, qu rl e hes ghe seem tor) hah: the p es r is blQW I fi qripsr y ,bl wnofi r mv he ge th: 0 entry; and thece tents areruri oi t inte edreining vat Th d rk, 001 6ll i 1 0 5 filbwfldi 0E and is washed 01113; 0 5 the solid mete ri ftl and is seved to be tised'for, special purposes which forrh, no part ofithisinvenmon. The solid ill/ eshed materials eon s' istingof the cooked fibers I end cells/are thei l ,thrown o n .9,

may riot have been thoroughly cooked, and are -then run into the beetingeiigine esit is termed the art, provided with washers, or a: siiililar neehiiie- The wesher or. ashers foreted ir etal sheets or wire mesh; previded with openings iergeenough to allow the pith eells topjass through, but small erioughto ree taiii the fibrous material. The-separation of complished iii the beeter in which the wesh ingof the solid materials is; eontinued with clean wateruiitil thedS red separation of the fibers andthe pith oellshas been: 'efiected.

placed iponthe Wet machine the ordinary 1ne,1iner, The water containing the pith eellsnthat flows from the washer is, if it is thick erioug'h, owing to th elpi'eserice of sulfieient inass of pithcells, run d ireotlyonto the Wet machineybiit if it is not thi ckzenou h o ir i p po vthe w e w' t i t e pith solution is ofij qm the washer into Qne or m Ief settling: tanks Where the pith t d'en 'h e th m ?tr 'xg e he Proper eo i t eyg-f m lmn tq. tho Skil he flirt; the clean were is off from the taiik screen to sepirete from them zinyjiart Whieh v e 1 the iifecessery, ehemic il solut on, ifteen rs s Aim ee m t a es of v ofithisrbeatirig engine areeovered with per the cellulose fibers; front the pithcells is a c- The fibrous material is their ready ,to be eellsere allowed to settle. Whemthey have t and the pith cells are conveyed to a wet, or similar machine to collect them to be subsequently used. either alone, or in conjunction with the iibrousp'ortion, as it is well known to those skilled in the art.

lteierringto the accompanying drawing, A represents the beating machine of a well known type in which B and B arethe washers and W is the heater, while and are pipes running from the washer into the two settling tanks I) and l).

p and '1) are pipes from which the clear water, after the pith cells have settled sufliciently, is run oil from the settling tanks.

II is a pipe conveyer through which pith cells are pumped by means of pump E through pipe 1) up to the wet machine F, Which it is unnecessary to describe more particularly as its construction is well known to those skilled in the art.

Settling tank D shows the Water as it runs a through the washer from the beater and containing the pith cells before they have settled; while the settling tank D shows the pith cells after they have settled with the clean water lying above them.

llaving thus described my invention, what I claim is,

' l. The process of preparing materials for paper making from cornstalks, sugarcane and analogous pithy stalks, which consists in; (1) cooking said stalks continuously in a single cooking liquor which contains the ordinary chemical reagents used to produce cellulose'l'ron'i vegetable fibers for a sufficient length of time to separate the libers (if-the shell and the pitlicclls from their incrus'taccous n'iatter; (2 separating the fibrous matter'from the pith cells by washingand screen- 'ing; 3) collecting the fibrous material and the pith cells, substantially asdescribed.

2. The process of preparin material's for paper making from c'ornstal s,"'sugar cane and analogous' p'ithy stalks, Which consists in; (1) cooking said stalkscontinuously in a single cooking liquor containing a caustic alkali fora sufficient length of tnne'tosermrat'e the fibers of the shell and the pith cells'ifronr their incrustaceous matter; ('2) separating thefibro'us matterf from the pith cle ll s-by Washingand screening; (3) collecting the fibrous material and the pith cellsfsubstsiriti'allyasdescribed.

3. The proccssof pr'cparin materials for paper making from cornstal sfsuga'r cane and analogous pithy stalks which 'c'cmsis'ts in; (1) cookingsaid stalks-continuously in a single cooking liquor,"which contains the ordinary chemical reagents used to produce cellulose from vegetable fibers'for a sufficient lengthot time to separate the'fibers of the shell and the pith cells from their incrus'taceous matter; (2) separating the fibrous matter from the pith cells by Washing and screening; (3) allowing the pith cells to settle out-of scribed the Washing water in a settling tank: (4) collecting the fibrous material and the pith cells. substantially as described.

4. T he process of preparing materials for paper making fron cornstalks, sugar cane and aTnalo ous pithy stalks, which consists in; (1) coofi iing said stalks continuously in a single cooking liquor containing a caustic alkali for a suliicient length of time to separate the fibers of the shell and the pith cells from their incrustaceous matter; (2) separating the fibrous 'matter from the pith cells by washing and screening: (25) allowing the pith cells to settle out'of the washing water in a settling tank; (4) collecting the fibrous mattcr and the pith cells, substantially as described.

5. The process of preparin materials for paper making from cornstal 's, sugar cane and analogous pithy stalks which consists in; (1) cutting or otherwise dividing the stalks into pieces; (2) cooking said stalks continuously in a single cooking liquor which contains the ordinary chemical reagents used to produce cellulose from vegetable fibers for a sullicient length of time to separate the fibers of thc'shell and the pith cells from their incrustaceo'us matter; (3) I separating the fibrous matter from the pith cells by washing and screening; (4) collecting the fibrous mater'ial and the pith'ce'l'ls, substantially as de- 6. The process oi preparing materials for paper making from cornstalks, sugar cane and 'analogouspithy stalks which consists in; (1) cutting or otherwise dii iding the stalks into pieces; (2) cooking said stalks con tinuously in a single cooking liquor containing a caustic alkali for a sufiicient len th of time to separate the libers of 'the she-l and the pith cells from their incrustac'eous matter; (3) separating the" fibrous matter from the pith cells by washing and screening; (4) collecting the fibrous material and'the pith cells, substantially'as described.

' 7. The )r'ocess of preparing materials for paper ma ing fro'in'oornstalks, sugar cane and analogous pithy" stalkswvhichconsists in," (l) cutting or otherwise dividing the stalk into pieces? (2) cooking said stalks continuously in 'a'singlecook'ing liquor which contains the ordinary chemical reagent s used to produce 'cellulose'from' vegetable tiber's for a sufficient length of timeto separate the fibers of the shell and the pith cells'from their incrustaceous matter; (3) se arating the fibrous'mat'terfrom the pith'cel s by washing and screening; (4) allowing the pith cel-ls to settle out of thewashing water in a settling tank; (5) collecting the fibrous material and the pith cells, substantially as describtal.

The recess of prcjmring materials for papervmaaing from 'corn's-talks, sugar cane and analogous pithy stalks which consists in; '(l) 7 cutting or otherwise dividing the tinuously 1n a sin%le cooking liquor containfibrous material and the pith cells, substan- Io ing a caustic alkai for a sufiicient length of tially as described. 7 time to separatethe fibers of the shell and the 5 pith cells from their 'incrustaceous matter; (3) separating the fibrous matter from the Witnesses:

ith cells by washing and screenin (4) al- 1 M. GINTZLER, owing the pith cells to settle out 0ft e wash- 1 EDMUND ELLSWQRTII FIELD, Jr.

stalk into pieces; (2) cooking said stalks coning Water in a settling tank; (5) collecting the i i l VIGGO DREWSE 

